Ensure your engine's longevity and performance with this genuine ACDelco RTV Engine Sealant. Specifically designed for durability and reliability, it's the OEM recommended sealant for various GM models, making it an essential for any car enthusiast or professional mechanic. The 5.3 oz volume is packaged in a convenient single-pack, providing you with the precise amount needed for a proper seal. The sealant's part number, 10-2010 12378521, confirms its authenticity and compatibility with numerous GM part numbers, including 3522440, 3538839, and 3546782, to name a few. This product, with MPN 210-12378521, is a direct replacement for superseded parts, ensuring a perfect fit and function without the need for additional modifications.
